by Nick Gromicko and Rob London
Thermostats are devices designed to control the heating and cooling systems in a building so that air temperature remains comfortable. According to InterNACHI’s Standards of Practice, inspectors are not required to verify, inspect or determine thermostat calibration, heat anticipation, automatic setbacks, timers, programs or clocks...
It is wise, however, for inspectors to understand thermostat operation and solutions to common defects.